Example inputPOST /api/v1/x402/char-freq
{
"text": "aabbbc"
}Portable intent card · data-quality
Char Freq API for agents
Compute character frequency top counts. Call when you inspect distribution before encoding or compression steps. Returns unique count and top char histogram for $0.001 USDC via x402 on Base. No network, no keys, no retention; first-party local JSON only. Results are advisory; the caller owns budgets, auth, and production controls.
Intent to transaction
One command, attributed.
The source header follows this discovery route through challenge, payment and delivery without exposing the buyer or request body.
npx agentcash@latest fetch https://api.delx.ai/api/v1/x402/char-freq -m POST -H 'x-delx-source: intent-card-char-freq-api' --max-amount 0.001 -b '{"text":"aabbbc"}'Agent discoverydelx/intent-card/v1
{
"intent": "Char Freq for an agent workflow",
"tool_name": "util_char_freq",
"price_usdc": "0.001",
"machine_url": "https://commerce.delx.ai/intents/char-freq-api.json"
}Portable and inspectable